CN113606329B - Vehicle and driving mode determining method, determining system and TCU thereof - Google Patents
Vehicle and driving mode determining method, determining system and TCU thereof Download PDFInfo
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- CN113606329B CN113606329B CN202110712244.2A CN202110712244A CN113606329B CN 113606329 B CN113606329 B CN 113606329B CN 202110712244 A CN202110712244 A CN 202110712244A CN 113606329 B CN113606329 B CN 113606329B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/02—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used
- F16H61/0202—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric
- F16H61/0204—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric for gearshift control, e.g. control functions for performing shifting or generation of shift signal
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/60—Inputs being a function of ambient conditions
- F16H59/66—Road conditions, e.g. slope, slippery
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/60—Inputs being a function of ambient conditions
- F16H59/66—Road conditions, e.g. slope, slippery
- F16H2059/663—Road slope
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/84—Data processing systems or methods, management, administration
Abstract
The invention discloses a method for determining a driving mode, which comprises the following steps: acquiring driving demand information of a user; the driving requirement information comprises driving road conditions, driving styles and gear shifting requirements; and determining a target gear shifting rule set according to the driving demand information and the corresponding relation between the preset driving demand set and the preset gear shifting rule set. According to the scheme, according to the actual driving requirement of the user before driving, a plurality of target gear shifting rules matched with the actual driving requirement are determined from the preset gear shifting rule set, so that the user is supported to actively select the customized driving mode according to the actual driving requirement, the driving experience is improved, and meanwhile, potential safety hazards caused by the gear shifting rule calculated by a passive adaptation program of the driver under some special working conditions can be avoided.
Description
Technical Field
The present disclosure relates to the field of vehicle technologies, and in particular, to a vehicle and a method and a system for determining a driving mode of the vehicle, and an automatic transmission control unit TCU.
Background
In the field of automatic transmission vehicles, a gear shifting strategy, also called a gear shifting rule, is a gear shifting and gear control function of an automatic gearbox, which is developed on the basis of 'people-vehicle-road-environment' application according to structural function characteristics and matching engine torque characteristics. At present, a case is provided in the development field of automatic gearbox gear shifting strategies of automatic transmission vehicles, for example, in CN109278758A, a driving mode based on user driving habits is provided, and the user habit can be migrated along with the use condition of the vehicle after a mobile phone is matched with an electric vehicle through driving condition characteristic learning; CN112092797a proposes a target gear selection scheme determined by hybrid gearbox control software based on user driving habits and real-time road conditions; CN106763724a summarizes the characteristics of gear shifting law determination of the automatic gearbox from the perspective of the automatic gearbox, and based on the characteristics of user operation and driving conditions, learns the driving law of the user through a neural network learning algorithm to obtain the gear shifting law of the gearbox. The problems of these related art are: the method has the advantages that a driver passively adapts to a preset gear shifting rule algorithm, the gear shifting rule algorithm is based on the fact that a general driving mode meeting the common driving conditions and environments of most customers cannot meet different driving requirements of the same driver; the preset gear shifting rule algorithm obtains the same gear shifting rule under the same vehicle type, the same road condition and the same or similar driving conditions, so that the gear shifting rule determined under some special conditions is too large in difference with the actual demand of a driver, and potential safety hazards are generated.
Disclosure of Invention
The invention provides a vehicle and a determination method and a determination system for driving modes of the vehicle and an automatic transmission control unit TCU, and aims to solve or partially solve the technical problem that a driver of an automatic transmission automobile needs to be passively adapted to a gear shifting rule determined by the system, and special driving performance requirements in special environments cannot be met.
To solve the above-mentioned technical problem, according to an alternative embodiment of the present invention, there is provided a method for determining a driving mode, including:
acquiring driving demand information of a user; the driving requirement information comprises driving road conditions, driving styles and gear shifting requirements;
and determining a target gear shifting rule set according to the driving demand information and the corresponding relation between the preset driving demand set and the preset gear shifting rule set.
Optionally, the correspondence includes a relationship matrix between the preset driving requirement set and the preset gear shifting rule set;
determining a target gear shift rule set according to the driving demand information and the corresponding relation between the preset driving demand set and the preset gear shift rule set comprises the following steps:
determining a target gear shifting vector according to the driving demand information and the relation matrix;
and determining the target gear shifting rule set according to the target gear shifting vector and the preset gear shifting rule set.
Further, the preset driving requirement set comprises a preset road condition subset, a preset driving habit subset and a preset gear shifting requirement subset; the relation matrix comprises a first relation sub-matrix between the preset road condition subset and the preset gear shifting rule set, a second relation sub-matrix between the preset driving habit subset and the preset gear shifting rule set, and a third relation sub-matrix between the preset gear shifting requirement subset and the preset gear shifting rule set;
the determining a target shift vector according to the driving demand information and the relation matrix includes:
determining a first relation vector according to the driving road condition and the first relation submatrix;
determining a second relation vector according to the driving habit and the second relation submatrix;
determining a third relation vector according to the gear shifting requirement and the third relation sub-matrix;
and determining the target gear shifting vector according to the first relation vector, the second relation vector and the third relation vector.
Optionally, the preset gear shift rule set includes a basic gear shift rule subset, an offset gear shift rule subset and a dynamic gear shift rule subset;
the basic gear shifting rule subset comprises at least one of standard gear shifting rule, economic gear shifting rule, motion gear shifting rule and snowfield gear shifting rule;
the offset gear shifting rule subset comprises at least one of a ramp correction gear shifting rule, a plateau correction gear shifting rule, a warming correction gear shifting rule and a braking correction gear shifting rule;
the dynamic gear shifting rule subset comprises at least one of a negative acceleration gradient dynamic self-adaptive gear shifting rule, an ascending dynamic gear shifting rule, a descending dynamic gear shifting rule and a gear shifting preventing rule.
Further, after the determining the target shift schedule set, the determining method further includes:
judging whether the target gear shifting rule set accords with preset conditions or not;
if yes, enabling according to the target gear shifting rule set;
wherein, the preset conditions include:
the target gear shifting rule set comprises a basic gear shifting rule;
the target gear shift schedule set includes at least one offset gear shift schedule or at least one dynamic gear shift schedule.
Optionally, the obtaining driving requirement information of the user includes:
the user driving demand information is obtained from an on-board ergonomic input device.
Optionally, the obtaining driving requirement information of the user includes:
acquiring voice input data of a user;
and determining the driving requirement information of the user according to the voice input data.
According to another alternative embodiment of the present invention, there is provided a driving mode determining system including:
the acquisition module is used for acquiring driving requirement information of a user; the driving requirement information comprises driving road conditions, driving styles and gear shifting requirements;
and the determining module is used for determining a target gear shifting rule set according to the driving demand information and the corresponding relation between the preset driving demand set and the preset gear shifting rule set.
According to a further alternative embodiment of the present invention, an automatic gearbox control unit is provided, the processor of which is used for programming the steps of the determination method implementing any of the foregoing solutions.
According to still another alternative embodiment of the present invention, there is provided a vehicle including the automatic transmission control unit according to the foregoing aspect.
Through one or more technical schemes of the invention, the invention has the following beneficial effects or advantages:
the invention provides a method for determining a driving mode, which comprises the steps of acquiring driving road condition information, driving style information and gear shifting requirements for representing the driving before the driving of a vehicle, and determining a target gear shifting rule set associated with the driving according to the driving requirement information from a corresponding relation between a preset driving requirement set and a preset gear shifting rule set; therefore, according to the scheme, a plurality of target gear shifting rules matched with the actual driving requirements are determined from a preset gear shifting rule set according to the actual driving requirements customized by a user before the driving; after the target gear shifting rule set is obtained, the automatic gearbox control unit TCU can perform gear shifting control according to the determined target gear shifting rule set, so that a user is supported to actively select a self-defined driving mode according to actual driving requirements, driving experience is improved, and meanwhile potential safety hazards caused by the fact that a driver is allowed to go to a gear shifting rule calculated by a passive adaptation program under some special working conditions can be avoided.
The foregoing description is only an overview of the present invention, and is intended to be implemented in accordance with the teachings of the present invention in order that the same may be more clearly understood and to make the same and other objects, features and advantages of the present invention more readily apparent.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:
FIG. 1 shows a flow diagram of a method of determining a driving pattern according to one embodiment of the invention;
FIG. 2 illustrates a flow chart of a determination method including a step of verifying shift schedule in accordance with one embodiment of the present invention;
FIG. 3 illustrates a schematic diagram of a preset shift schedule in a DCT model according to another embodiment of the present invention;
fig. 4 shows a NAG dynamic shift schedule schematic according to another embodiment of the invention;
FIG. 5 illustrates a schematic diagram of a DHD dynamic shift schedule in accordance with another embodiment of the present invention;
FIG. 6 illustrates a SIA shift schedule diagram according to another embodiment of the present invention;
FIG. 7 illustrates a FUC shift schedule schematic according to another embodiment of the present invention;
FIG. 8 illustrates a schematic diagram of interaction of a TCU with an HMI of an in-vehicle MP5 in accordance with another embodiment of the invention;
fig. 9 shows a schematic diagram of a driving mode determination system according to a further embodiment of the present invention.
Detailed Description
In order to make the technical solution more clearly understood by those skilled in the art, the following detailed description is made with reference to the accompanying drawings. Throughout the specification, unless specifically indicated otherwise, the terms used herein should be understood as meaning as commonly used in the art. Accordingly, unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. In case of conflict, the present specification will control. The various devices and the like used in the present invention are commercially available or can be prepared by existing methods unless otherwise specifically indicated.
In use, the automatic-gear vehicle has the drivability of the vehicle set, and the user can only passively adapt to the drivability of the vehicle under various driving conditions although the drivability has different performances under different driving conditions. A good drivability calibration can cover the driving use demands of users under most working conditions, but the driving use demands are difficult to cover for different users, different use environments and use working conditions, and the users focusing on driving experience have special driving demands, and under the special working conditions, the same users have different driving demands on the same road section.
Further analysis of the current state of the art means shows that adapting the driver to the driving pattern provided by the vehicle is still the way most vehicles use. For example, CN106763724a emphasizes that learning user driving laws through a neural network learning algorithm enables selection of transmission shifting laws that compromise power, economy, and emissions performance requirements. For users, a passive algorithm for adapting to the gear shifting rule is still needed, and after long-term use, the balance of the gear shifting rule between people and vehicles is achieved, and at the moment, if temporary dynamic adjustment is performed again, the method is generally inconvenient.
In addition, the related art also collects various sensor signals and CAN bus data through a TCU controller to identify driver intention and judge the current working state of the transmission; then the TCU comprehensively judges according to the intention of a driver and the current working state of the transmission, and judges and selects an optimal gear shifting rule mode; and then, after the TCU selects the corresponding optimal gear shifting regular mode to operate, setting the target speed ratio of the CVT, so that the transmission operates at the set target speed ratio. However, the method is a selection method for providing a gear shifting rule based on the structural characteristics and performance requirements of the gearbox, is arranged in a gearbox program, analyzes road condition characteristics and driving intention characteristics of a driver, is matched with a driving mode from a gearbox control program, and belongs to a scheme for passively enabling a user to accept the gear shifting rule.
Therefore, in order to exert the subjective activity of the driving mode of the driver, the driving performance of the vehicle can be flexibly customized under special working conditions, and the driver is prevented from always adapting to the general gear shifting rule provided by the program algorithm, and the overall thought of the driving mode determining method provided by the invention is as follows:
acquiring driving demand information of a user; the driving requirement information comprises driving road conditions, driving styles and gear shifting requirements; and determining a target gear shifting rule set according to the driving demand information and the corresponding relation between the preset driving demand set and the preset gear shifting rule set.
The control principle of the scheme is as follows: before a vehicle runs, acquiring driving road condition information, driving style information and gear shifting requirements for representing the current driving, and determining a target gear shifting rule set associated with the current driving from a corresponding relation between a preset driving requirement set and a preset gear shifting rule set according to the driving requirement information; therefore, according to the scheme, a plurality of target gear shifting rules matched with the actual driving requirements are determined from a preset gear shifting rule set according to the actual driving requirements customized by a user before the driving; after the target gear shifting rule set is obtained, the automatic gearbox control unit TCU can perform gear shifting control according to the determined target gear shifting rule set, so that a user is supported to actively select a self-defined driving mode according to actual driving requirements, driving experience is improved, and meanwhile potential safety hazards caused by the fact that a driver is allowed to go to a gear shifting rule calculated by a passive adaptation program under some special working conditions can be avoided. The scheme is particularly suitable for DCT vehicle types carrying the double clutch automatic gearbox.
In the following, the above-mentioned scheme will be further described with reference to specific embodiments:
partial noun interpretation to which the invention relates:
basic gear shifting law: shift patterns of D-general or standard/ECO-economy/SPORT-SPORT/WIN-snowfield and the like are commonly equipped;
shifting the gear shifting rule: basic shift schedules adjust for environmental adaptations, such as: ALT-plateau mode/WUP-warm-up mode/HILL-ramp mode/SVD-strong deceleration mode or brake correction mode;
dynamic gear shifting rule: limiting and controlling the aimed lifting gear condition due to partial special road conditions and driving operation during driving;
NAG: the dynamic self-adaptive gear shifting rule of the negative acceleration gradient mainly solves the problem of frequent gear shifting caused by oil collection obstacle and braking deceleration curve passing;
UHD: the dynamic gear shifting rule of the uphill running prevents the problem of upshift caused by low opening degree of the accelerator pedal and up-shift threshold after the oil receiving and upshift preventing functions, and can avoid the problem of frequent gear shifting caused by change of the uphill accelerator;
DHD: the dynamic gear shifting rule of downhill running prevents acceleration and upshift, and the long downhill running can utilize engine braking capability to assist braking, so that safety is improved, and the panic driving is avoided;
SIA: downshift prevention caused by a slow increase in the accelerator pedal;
WHS: a wheel slip downshift preventing function for preventing a driving force output slip phenomenon caused by a difference in adhesion coefficient and a change in gear when starting from a low adhesion coefficient road surface;
FUC: and the steady-state forced upshift gear shifting rule is used for forced upshift under some special working conditions.
In an alternative embodiment, as shown in fig. 1, the driving mode determining method is applied to an automatic transmission control unit TCU, and the specific steps thereof are as follows:
s1: acquiring driving demand information of a user; the driving requirement information comprises driving road conditions, driving styles and gear shifting requirements;
in general, the drivability requirements of a user can be expressed as: 1) Road conditions for use in vehicles: mountain area, snow area low adhesion coefficient road, high speed, urban area, suburban single road condition and comprehensive road condition; 2) Preferred driving style: racing car type, sport type, comfortable type and economical type; 3) Requirements for gear shifting: avoiding frequent gear shifting and being insensitive to frequent gear shifting. In the case of a user selection or a specific use, the vehicle can recognize drivability requirement information, i.e. road condition-style-shift requirement.
Therefore, the driving road conditions in this embodiment represent the road conditions of the present driving, and the relevant driving road conditions are: mountain areas, plateaus, camps, high speeds, urban areas, suburban areas and the like, and different driving road conditions have different requirements on gear shifting rules.
The driving style indicates driving habits intended by the driver in the current driving, and the relevant driving styles are: racing car type, sports type, comfortable type and economical type. The driving style may also be changed for the same driver and the same road condition, for example, in mountain areas, the driver may like sports when driving alone, but the driver may choose comfort when carrying the old or the child on the vehicle.
The shift requirement indicates a shift control demand of the driver during the driving, and the related shift requirement includes a degree of sensitivity of a shift frequency, such as sensitivity to frequency of gear shifting or sensitivity to frequency of gear shifting.
For example, the driving performance requirement expressed by a certain user on a certain mountain highway on a certain day may be: mountain-sporty-insensitive to frequent gear changes, while on another day, its drivability requirement expression may be: mountain areas-comfort-are frequently sensitive to gear changes.
The driving requirement information of the user can be obtained in the following two ways:
first, the user driving requirement information is acquired from an on-vehicle ergonomic input device.
The human body input device refers to information input peripheral devices such as a mouse, a keyboard and the like. In addition, the touch-screen man-machine interaction interface HMI (Human Machine Interface) of the vehicle-mounted control system can also be used as an input device of the driving requirement information of the user. For example, the user may directly input or select corresponding user driving demand information on the display screen of the vehicle-mounted MP 5.
Secondly, acquiring the driving requirement information of the user from a voice input device, namely: acquiring voice input data of a user; and determining the driving requirement information of the user according to the voice input data.
Specifically, the required driving requirement information of the user can be obtained directly through user voice recognition or user voice questions and answers.
S2: and determining a target gear shifting rule set according to the driving demand information and the corresponding relation between the preset driving demand set and the preset gear shifting rule set.
Specifically, the TCU determines a user-defined driving mode, i.e., a target gear shift rule set, of the user during the present driving according to the obtained driving demand and a corresponding relationship between a preset driving demand set and a preset gear shift rule set.
In order to accurately determine the target gear shifting rule set matched with the driving according to the driving demand information and the corresponding relation, the method can be realized by a matrix or vector operation method. If the corresponding relation between the preset driving requirement set and the preset gear shifting rule set is converted into a relation matrix, after new driving requirement information is obtained, the corresponding target gear shifting rule set can be determined by combining the relation matrix, and the method specifically comprises the following steps:
determining a target gear shifting vector according to the driving demand information and the relation matrix;
and determining the target gear shifting rule set according to the target gear shifting vector and the preset gear shifting rule set.
The target gear shifting vector represents a gear shifting rule set comprehensively determined according to current driving demand information.
The preset driving requirements are concentrated and comprise preset multiple driving requirements, and the preset driving requirements can be subdivided according to driving road conditions, driving styles and gear shifting requirements, and the preset driving requirements are specifically as follows:
presetting a subset of driving road conditions, comprising: mountain areas, plateaus, camps, high speeds, urban areas, suburban areas, etc.;
a preset driving style subset comprising: racing car type, sports type, comfortable type, economical type, etc.;
presetting a gear shifting requirement subset, comprising: frequent gear shifting, insensitivity, etc.
And the relation matrix comprises a first relation sub-matrix between the preset driving road condition subset and the preset gear shifting rule set, a second relation sub-matrix between the preset driving habit subset and the preset gear shifting rule set, and a third relation sub-matrix between the preset gear shifting requirement subset and the preset gear shifting rule set.
Similarly, the preset gear shifting rules can be divided according to the attribute and the function of the gear shifting rules, and the preset gear shifting rules are concentrated, and specifically are as follows:
the preset gear shifting rule set comprises a basic gear shifting rule subset, an offset gear shifting rule subset and a dynamic gear shifting rule subset;
the basic gear shifting rule subset comprises at least one of standard gear shifting rule, economic gear shifting rule, motion gear shifting rule and snowfield gear shifting rule;
the offset gear shifting rule subset comprises at least one of a ramp correction gear shifting rule, a plateau correction gear shifting rule, a warming correction gear shifting rule and a braking correction gear shifting rule;
the dynamic gear shifting rule subset comprises at least one of a negative acceleration gradient dynamic self-adaptive gear shifting rule, an ascending dynamic gear shifting rule, a descending dynamic gear shifting rule and a gear shifting preventing rule.
The determining a target shift vector according to the driving demand information and the relation matrix includes:
determining a first relation vector according to the driving road condition and the first relation submatrix; the first relation vector represents a gear shifting rule set corresponding to the current driving road condition;
determining a second relation vector according to the driving habit and the second relation submatrix; the second relation vector represents a gear shifting rule set corresponding to the current driving habit;
determining a third relation vector according to the gear shifting requirement and the third relation sub-matrix; the third relation vector represents a gear shifting rule set corresponding to the current gear shifting requirement;
and determining the target gear shifting vector according to the first relation vector, the second relation vector and the third relation vector.
Specifically, the method for determining the target shift vector may be: directly using the first relation vector, performing exclusive OR operation on the second relation vector and the third relation vector, and obtaining a target gear shifting vector; after the target gear shift vector is obtained, the target gear shift rule set of the driving can be correspondingly determined.
For example, if the value of an element in the relation matrix is 1 or 0, the target shift vector can be obtained by performing an exclusive-or operation between the first relation vector, the second relation vector and the third relation vector.
In combination with the foregoing embodiment, after dividing the preset shift schedule set into three sub-categories of basic shift, offset shift and dynamic shift, another alternative method for determining the target shift vector is:
determining a target basic gear shifting sub-vector according to the second relation vector;
determining a target offset shift sub-vector according to the first relationship vector, the second relationship vector and the third relationship vector;
determining a target dynamic gear shifting sub-vector according to the first relation vector, the second relation vector and the third relation vector;
and obtaining the target gear shifting vector according to the target basic gear shifting sub-vector, the target offset gear shifting sub-vector and the target dynamic gear shifting sub-vector.
According to the scheme, the basic gear shifting rule of the driving is determined preferentially according to the driving style, then the offset gear shifting rule and the dynamic gear shifting rule are comprehensively determined according to the driving road condition, the driving style and the gear shifting requirement, and therefore the matching precision of the target gear shifting rule set and the actual driving requirement of a user can be improved.
After the target gear shifting rule set is determined, the self-defined driving mode of the driving can be obtained. However, in some possible cases, if the user does not input complete driving requirement information according to the rule, or if the analysis of the driving requirement information of the user has a problem, the gear shifting rule in the target gear shifting rule set obtained according to the incomplete driving requirement information may be incomplete, if the basic gear shifting rule is lacking, the gear shifting function cannot be implemented correctly due to the lack of the basic gear shifting rule, or potential safety hazards exist. In order to avoid such a problem, the following control may be performed:
optionally, as shown in fig. 2, after the target gear shift rule set is determined in step S2, the determining method further includes:
s3: judging whether the target gear shifting rule set accords with preset conditions or not; if yes, enabling according to the target gear shifting rule set;
wherein, the preset conditions include:
the target gear shifting rule set comprises a basic gear shifting rule;
the target gear shift schedule set includes at least one offset gear shift schedule or at least one dynamic gear shift schedule.
S3, the integrity check of the custom target gear shifting rule set matched with the driving requirement of the user is specified. If the target gear shifting rule set does not meet the preset condition, the automatic gearbox control unit TCU performs gear shifting control according to the default gear shifting rule set in the driving process for driving safety.
In general, the present embodiment provides a method for determining a driving mode, which implements rapid and accurate determination of a target gear shift rule set from a corresponding relationship between a preset driving requirement set and a preset gear shift rule set according to newly acquired driving requirement information in a mode of matrix and vector operation; on the other hand, through setting up the integrality check of target gear change rule set, the possible gear change control risk that produces according to user's custom driving demand has been eliminated.
In the following alternative embodiment, the above scheme is applied to a DCT model with a dual clutch automatic gearbox, and the implementation of the above scheme is described in detail with reference to a specific relation matrix arrangement.
The schematic diagram of the preset gear shifting rule set equipped by the DCT vehicle model is shown in fig. 3, and comprises the following components:
basic gear shift law subset: NRM-standard, ECO-economy, SPORT-SPORT, WIN-snowfield;
offset shift schedule subset: ALT-plateau correction, HILL-ramp correction, WUP-warm-up correction, SVD-brake correction
Dynamic shift schedule subset: NAG, DHD, UHD, FUC, SIA, WHS.
Some typical dynamic shift patterns are shown in FIGS. 4-7
The preset driving requirement set by the DCT vehicle type comprises:
presetting a subset of driving road conditions: mountain areas, plateaus, camps, high speeds, urban areas, and suburban areas;
frequent sensitivity to gear shifting, preset driving style subset: racing car type, sport type, comfortable type and economical type;
presetting a gear shifting requirement subset: is insensitive to frequent gear shifting and is sensitive to frequent gear shifting;
the predetermined relationship matrix of the preset driving demand set and the preset shift rule set is shown in table 1.
Table 1: driving demand-gear shift law relation matrix
In the automatic gearbox gear shifting law, the final gear shifting law is as follows: the basic mode shift speed threshold value and the shift rule shift value with larger absolute value calculate the shift speed threshold value, and the dynamic shift rule limits the shift condition under the necessary working condition.
In the implementation, the driving requirement information of the user can be obtained through a vehicle-mounted human body input device, or an audio input mode or a display input device mode, wherein the driving requirement information comprises a road on which the user drives this time, a favorite driving style, a requirement on gear shifting and the like. Keywords in the user input characteristics are obtained through user selection or through voice recognition, so that corresponding driving requirements are obtained, and corresponding gear shifting rules are matched.
The driving requirement of the current driving expressed by a certain user through the HMI of the vehicle-mounted MP5 is as follows: mountain area-comfort-frequent gear shifting sensitivity, corresponding relation vectors are obtained according to the relation matrix of table 1:
shift rule vector corresponding to driving road conditions: r= [0 0 10 0 10 10 11 10 0];
shift law vector corresponding to driving style: s= [ 10 0 0 11 11 0 10 0 0 0];
gear-shifting rule vector corresponding to gear-shifting requirement: d= [0 0 10 0 0 11 11 11 11 ];
when the target relation vector is determined according to the three relation vectors, the calculation method is as follows:
the basic gear shifting rule is one of NRM, ECO, SPORT, WIN, and is determined according to a vector S corresponding to the driving style, specifically [ 10 0 0];
the offset gear shifting rule is determined according to exclusive OR operation of corresponding elements of a driving road condition vector R, a driving style vector S and a gear shifting demand vector D, and specifically comprises the following steps: [ 10 0 1];
the dynamic gear shifting rule is determined according to exclusive OR operation of corresponding elements of a driving road condition vector R, a driving style vector S and a gear shifting demand vector D, and specifically comprises the following steps: [ 11 0 0 11 ];
the three vectors are synthesized to obtain a target gear shift vector as follows: [ 10 0 0 10 0 11 10 0 11 ], from the target shift vector, a target shift pattern set can be determined as: NRM, ALT, SVD, WHS, NAG, SIA, FUC.
If the user does not set or the setting is unsuccessful, the control system sets a default gear shifting rule of the user as follows: [1 0 0 0 11 0 0 0 0 0 0 1 1]
After the target gear shifting rule set is obtained, the automatic gearbox control unit generates a mode instruction to enable according to the target gear shifting rule set.
The device interaction schematic of the scheme is shown in fig. 8:
the method mainly comprises the following steps:
(1) The TCU acquires driving style driving habit road condition information through an ergonomic input device;
(2) The TCU confirms and completely inputs the information of road condition, driving habit and gear shifting requirement;
(3) The TCU compares keywords of the predefined road conditions, driving habits and gear shifting demands or combines the driving demands and gear shifting rule relation matrix according to the selected information, performs dimension transformation according to gear shifting rule vectors and target signal demands, and outputs a mode instruction;
(4) If the TCU verification instruction is incomplete, a default driving mode is used;
(5) The TCU acquires a mode instruction, and the application layer software analyzes mode characteristics according to the mode demand function matrix;
(6) The TCU controls the gearbox to match the driving mode and enables the corresponding function.
Based on the same inventive concept as the previous embodiments, in another alternative embodiment, there is provided a driving mode determining system comprising:
an acquisition module 10, configured to acquire driving requirement information of a user; the driving requirement information comprises driving road conditions, driving styles and gear shifting requirements;
the determining module 20 is configured to determine a target gear shift rule set according to the driving requirement information and a corresponding relationship between a preset driving requirement set and a preset gear shift rule set.
Optionally, the correspondence includes a relationship matrix between the preset driving requirement set and the preset gear shifting rule set;
the determining module 20 is configured to:
determining a target gear shifting vector according to the driving demand information and the relation matrix;
and determining the target gear shifting rule set according to the target gear shifting vector and the preset gear shifting rule set.
Further, the preset driving requirement set comprises a preset road condition subset, a preset driving habit subset and a preset gear shifting requirement subset; the relation matrix comprises a first relation sub-matrix between the preset road condition subset and the preset gear shifting rule set, a second relation sub-matrix between the preset driving habit subset and the preset gear shifting rule set, and a third relation sub-matrix between the preset gear shifting requirement subset and the preset gear shifting rule set.
The determining module 20 is configured to:
determining a first relation vector according to the driving road condition and the first relation submatrix;
determining a second relation vector according to the driving habit and the second relation submatrix;
determining a third relation vector according to the gear shifting requirement and the third relation sub-matrix;
and determining the target gear shifting vector according to the first relation vector, the second relation vector and the third relation vector.
Optionally, the preset gear shift rule set includes a basic gear shift rule subset, an offset gear shift rule subset and a dynamic gear shift rule subset;
the basic gear shifting rule subset comprises at least one of standard gear shifting rule, economic gear shifting rule, motion gear shifting rule and snowfield gear shifting rule;
the offset gear shifting rule subset comprises at least one of a ramp correction gear shifting rule, a plateau correction gear shifting rule, a warming correction gear shifting rule and a braking correction gear shifting rule;
the dynamic gear shifting rule subset comprises at least one of a negative acceleration gradient dynamic self-adaptive gear shifting rule, an ascending dynamic gear shifting rule, a descending dynamic gear shifting rule and a gear shifting preventing rule.
Further, the determining module 20 is configured to:
judging whether the target gear shifting rule set accords with preset conditions or not; if yes, enabling according to the target gear shifting rule set; wherein, the preset conditions include:
the target gear shifting rule set comprises a basic gear shifting rule;
the target gear shift schedule set includes at least one offset gear shift schedule or at least one dynamic gear shift schedule.
Optionally, the acquiring module 10 is configured to:
the user driving demand information is obtained from an on-board ergonomic input device.
Optionally, the acquiring module 10 is configured to:
acquiring voice input data of a user;
and determining the driving requirement information of the user according to the voice input data.
Based on the same inventive concept as the previous embodiments, in a further alternative embodiment an automatic gearbox control unit is provided, the processor of which is used for programming the steps of the determination method of any of the previous embodiments.
In yet another alternative embodiment, a vehicle is provided that includes the automatic transmission control unit of the above embodiment, based on the same inventive concept as the previous embodiment.
Through one or more embodiments of the present invention, the present invention has the following benefits or advantages:
the invention provides a driving mode determining method, a driving mode determining system and a corresponding vehicle, wherein driving road condition information, driving style information and gear shifting requirements which represent the driving are obtained before the vehicle runs, and then a target gear shifting rule set associated with the driving is determined from a corresponding relation between a preset driving requirement set and a preset gear shifting rule set according to the driving requirement information; therefore, according to the scheme, a plurality of target gear shifting rules matched with the actual driving requirements are determined from a preset gear shifting rule set according to the actual driving requirements customized by a user before the driving; after the target gear shifting rule set is obtained, the automatic gearbox control unit TCU can perform gear shifting control according to the determined target gear shifting rule set, so that a user is supported to actively select a self-defined driving mode according to actual driving requirements, driving experience is improved, and meanwhile potential safety hazards caused by the fact that a driver is allowed to go to a gear shifting rule calculated by a passive adaptation program under some special working conditions can be avoided.
While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the application.
It will be apparent to those skilled in the art that various modifications and variations can be made in the present application without departing from the spirit or scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims and the equivalents thereof, the present application is intended to cover such modifications and variations.
Claims (8)
1. A method of determining a driving mode, the method comprising:
acquiring driving demand information input by a user; the driving requirement information comprises driving road conditions, driving styles and gear shifting requirements; the shift requirement includes being sensitive to or insensitive to frequency of shifting;
determining a target gear shifting rule set according to the driving demand information and the corresponding relation between a preset driving demand set and a preset gear shifting rule set;
the corresponding relation comprises a relation matrix between the preset driving demand set and the preset gear shifting rule set; the preset driving requirement set comprises a preset road condition subset, a preset driving habit subset and a preset gear shifting requirement subset; the relation matrix comprises a first relation sub-matrix between the preset road condition subset and the preset gear shifting rule set, a second relation sub-matrix between the preset driving habit subset and the preset gear shifting rule set, and a third relation sub-matrix between the preset gear shifting requirement subset and the preset gear shifting rule set;
determining a target gear shift rule set according to the driving demand information and the corresponding relation between the preset driving demand set and the preset gear shift rule set comprises the following steps:
according to the driving demand information and the relation matrix, determining a target gear shift vector comprises: determining a first relation vector according to the driving road condition and the first relation submatrix; determining a second relation vector according to the driving habit and the second relation submatrix; determining a third relation vector according to the gear shifting requirement and the third relation sub-matrix; determining the target gear shifting vector according to the first relation vector, the second relation vector and the third relation vector;
and determining the target gear shifting rule set according to the target gear shifting vector and the preset gear shifting rule set.
2. The method of determining of claim 1, wherein the preset shift schedule set includes a base shift schedule subset, an offset shift schedule subset, and a dynamic shift schedule subset;
the basic gear shifting rule subset comprises at least one of standard gear shifting rule, economic gear shifting rule, motion gear shifting rule and snowfield gear shifting rule;
the offset gear shifting rule subset comprises at least one of a ramp correction gear shifting rule, a plateau correction gear shifting rule, a warming correction gear shifting rule and a braking correction gear shifting rule;
the dynamic gear shifting rule subset comprises at least one of a negative acceleration gradient dynamic self-adaptive gear shifting rule, an ascending dynamic gear shifting rule, a descending dynamic gear shifting rule and a gear shifting preventing rule.
3. The determination method according to claim 2, wherein after the determination of the target shift schedule set, the determination method further comprises:
judging whether the target gear shifting rule set accords with preset conditions or not;
if yes, enabling according to the target gear shifting rule set;
wherein, the preset conditions include:
the target gear shifting rule set comprises a basic gear shifting rule;
the target gear shift schedule set includes at least one offset gear shift schedule or at least one dynamic gear shift schedule.
4. The determining method according to claim 1, wherein the obtaining driving demand information of the user includes:
the user driving demand information is obtained from an on-board ergonomic input device.
5. The determining method according to claim 1, wherein the obtaining driving demand information of the user includes:
acquiring voice input data of a user;
and determining the driving requirement information of the user according to the voice input data.
6. A system for determining a driving pattern, the system comprising:
the acquisition module is used for acquiring driving requirement information input by a user; the driving requirement information comprises driving road conditions, driving styles and gear shifting requirements; the shift requirement includes being sensitive to or insensitive to frequency of shifting;
the determining module is used for determining a target gear shifting rule set according to the driving demand information and the corresponding relation between the preset driving demand set and the preset gear shifting rule set;
the corresponding relation comprises a relation matrix between the preset driving demand set and the preset gear shifting rule set; the preset driving requirement set comprises a preset road condition subset, a preset driving habit subset and a preset gear shifting requirement subset; the relation matrix comprises a first relation sub-matrix between the preset road condition subset and the preset gear shifting rule set, a second relation sub-matrix between the preset driving habit subset and the preset gear shifting rule set, and a third relation sub-matrix between the preset gear shifting requirement subset and the preset gear shifting rule set;
the determining module is used for:
according to the driving demand information and the relation matrix, determining a target gear shift vector comprises: determining a first relation vector according to the driving road condition and the first relation submatrix; determining a second relation vector according to the driving habit and the second relation submatrix; determining a third relation vector according to the gear shifting requirement and the third relation sub-matrix; determining the target gear shifting vector according to the first relation vector, the second relation vector and the third relation vector;
and determining the target gear shifting rule set according to the target gear shifting vector and the preset gear shifting rule set.
7. An automatic gearbox control unit, characterized in that a processor of the automatic gearbox control unit is programmed to carry out the steps of the determination method according to any one of claims 1-5.
8. A vehicle, characterized in that the vehicle comprises an automatic gearbox control unit according to claim 7.
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| JP2001182812A (en) * | 1999-12-27 | 2001-07-06 | Auto Network Gijutsu Kenkyusho:Kk | Automatic shift adjusting for device automobile |
| JP3515509B2 (en) * | 2000-10-24 | 2004-04-05 | 本田技研工業株式会社 | Control device for automatic transmission for vehicles |
| CN102518792B (en) * | 2011-12-16 | 2015-04-08 | 奇瑞汽车股份有限公司 | Fuzzy control method for automatic gearbox |
| CN107869579B (en) * | 2016-09-28 | 2020-09-29 | 上海汽车集团股份有限公司 | Fuzzy logic-based gear shifting rule control method and device and vehicle |
| CN106763724A (en) * | 2017-01-19 | 2017-05-31 | 西华大学 | The optimal Shift Strategy system of many performance synthesises of automobile geared automatic transmission |
| CN110356415A (en) * | 2018-03-26 | 2019-10-22 | 长城汽车股份有限公司 | A kind of control method for vehicle and device |
| CN109882587A (en) * | 2019-01-31 | 2019-06-14 | 中国北方车辆研究所 | Special vehicle self shifter control system and method based on equivalent drag coefficient |
| CN110206878B (en) * | 2019-04-29 | 2020-06-26 | 东风商用车有限公司 | Gear shifting control method for automatic gearbox of heavy-duty vehicle |
| CN110985651B (en) * | 2019-12-04 | 2021-08-31 | 北京理工大学 | Automatic transmission multi-parameter fusion gear shifting strategy based on prediction |
| CN111457083A (en) * | 2020-03-18 | 2020-07-28 | 宁波上中下自动变速器有限公司 | Automatic gear shifting control method and system and automobile |
| CN111365450B (en) * | 2020-03-26 | 2021-06-11 | 泸州容大智能变速器有限公司 | CVT automatic transmission gear shifting method meeting various working conditions |
| CN111561564B (en) * | 2020-05-31 | 2021-09-17 | 重庆大学 | Gear shifting control method of double-clutch type automatic transmission based on gear shifting control law |
| CN112092797B (en) * | 2020-09-23 | 2021-09-21 | 中国第一汽车股份有限公司 | Gear shifting control method and device based on multiple dimensions, vehicle and medium |
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